Paper bags



(No Model.) 4 Sheets-Sheet 1.

PfH. K ELLIHER. MACHINBFOR MAKING PAPER BAGS.

N0;439,842. Patented Nov. 4, 189g);

, I j egeyfljflwwa M y W ms moms versus 00., PnoTn-urum, WASHXNGTDN, n. c.

(No Model. I 4 sheets-sheet 2.

v P. H. KELLIHER. MACHINE FORMAKING PAPER'BAGS.

Patented Nov. 4, I890.

'(No Model.) 4 SheetsSheet 3.

P. H. KELLIHERQ I MACHINE FOR MAKING. PAPER. BAGS. No. 439,842. Patented Nov. 4, 1890.

jredermlw,

MAX/v1, a. 69/.

(No Model.)

MACHINE FOR MAKING PAPER-BAGS.

Patented Nov. 4, 1890:

m: warns PETzns cc., PM

UNITED STATES PATENT OFFICE.

FREDERICK H. KELLIHER, OF CLEVELAND, )HH), ASSIGNOR TO NEIVTON V. TAYLOR, OF SAME PLACE.

MACHINE FOR MAKING PAPER BAGS.

SPECIFICATION forming part of Letters Patent No. 439,842, dated November 4, 1890.

Application filed February 3, 1890- Serial No. 339,002. (No model.)

To all whom itmcty concern.-

Be it known that I, FREDERICK 1L KELLI- HER, of Cleveland, county of Cuyahoga, State of Ohio, have invented an Improvement in Machines for Making Paper Bags, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object the production of a machine for the manufacture of the paper bag shownin application Serial No. 337,096, made by Newton W. Taylor, the apparatus herein shown being adapted to be added to a paper-bag machine of the class shown in United States Patent No. 252,412, July 17, 1882, which latter patent is an improvement on the invention described in United States Patent No. 231,642, dated August 31, 1880.

Preparatory to describing the machine to be herein claimed, I will premise by saying that a strip of paper will be folded longitudinally to constitute a tube, and the leading end of the tube will be acted upon to have a diamond fold made therein, and then twice cross-folded to form the bottom of the bag, all as provided for in the said patent, the second cross-fold also folding the body of the bag transversely, making a blind fold in the body of the bag. In accordance with my invention to be herein described, this blind fold in thebody of thebag must be taken out, and thereafter the bag while being fed longitudinally by suitable feeding mechanism will be folded longitudinally between each edge thereof and the center of the bag, the said fold extending from the mouth of the bag across its bottom, the edges of the bag being folded over to'form longitudinal flaps, as will be described.

My invention consists, in peculiar devices by which to turn back or unfold the bottom of the bag back in the line of the second cross or blind fold, the devices herein shown for such purpose being aided in their action by suction in a suction-box, as will be described.

The said machine further contains means for creasing the bag longitudinally and folding the same longitudinallyin the line of the said creases.

Figure 1 is atop or plan view of a sufficient portion of'a paper-bag-making machine to enable my invention to be understood, the pasting-roll m shown in Fig. 2 being broken out. Fig. 2 is a longitudinal section of Fig. 1 in the line as. Fig. 3 is a perspective detail to be referred to, it being made chiefly to show part of the contrivance for unfolding the blind fold, so called, in the body of the bag. Fig. t is an enlarged sectional detail to be referred to of the suction-box and other parts of the unfolding apparatus. Fig. 5 is a perspective detail showing the means for creasing the bag longitudinally after the blind fold has been removed, together with one part of the device for turning overthe edge of the creased bag upon the body thereof. Fig. 6 is a detail showing the creasing-rolls, the belts for driving them being shown by heavy black lines; Fig. 7, a detail looking at the delivery end of the device for folding over the longitudinal side edges of the bag; Fig. 8,a cross-section of thebag. Figs. 9 and 10 show cross-sections of the bag partially and finally folded over longitudinally; and Fig. 11, by dotted lines, but on a smaller scale, shows a bag, the full lines showing it folded.

Referring to the drawings, the frame-work G, the pasting-roll m on a shaft m the three rolls 0 0' c and the two tucker-blades (if, 00- operating therewith to make the first and second cross-folds in the usual diamondfolded leading end of the tube, the blade f, also making what is known as the blind fold in the body of the bag, are and may be all substantially as in Fig. 5 of the patent, No. 252,412, referred to. The said patent shows means for removing the blind fold, said means consisting, essentially, of two sets of endless belts.

In carrying out my invention herein to be described I locate at the delivery side of the rolls 0 c a shield or plate a, attached to a suitable cross-bar a, (shown in Figs. 1 and 2,) having arms at its ends, which, as herein represented, are supported by the journal of the roll 0. This plate a has suitably connected to it, as herein shown, by screws a a pocket plate 06*, the lower hooked end of which (see Fig. 2) terminates near one end of aforaminous plate 12, forming the top of a suction-box, having a chamber b below the plate, the box being connected by pipe b with some suitable suction or exhaust apparatus, so that air will be drawn down through the holes in the foraminous plate of the suction-box. The roll c is provided near its center with an annular groove deep enough to receive a boutit loosely a ring 0 over which ring is passed an endless belt 0 which is passed under a roll e, and then over a roll 6, also grooved annularly near the middle of its length, the said belt being also extended over and under a driving-roll 6 having its journals mounted in suitable bearings upon the frame-work, the belt from the driving-roll a passing under the rolls e, e, and 0 but the lower course of the belt does not touch the upper course of the belt under the roll 6. I extend the belt 0 about the ring on the roll 0 so that the said belt may be moved, if desired, at a faster surface speed than that of the roll 0 the latter roll being rotated by means substantially such as described in the said patent and at a surface speed corresponding to that of the roll 0.

In the machine to be herein described I employ a second belt m it running from over the under feed-roll m back under the creasing 'bed-roll m having its journals in suitable bearings on the frame-work, thence under the idle-roll m across the top of the foraminous plate I), and over the roll m to the roll m. The belt in will be of such material that the air sucked through or exhausted from above the said foraminous plate will pass through the belt, and, acting on the pa;- per bag, will hold the same down on the belt m The machine herein to be described also has two feeding-rolls g 9 about which are extended two taking-off belts h h, said belts serving to take away the bag after the same has been properly folded, the said belts being common to the said patent, No. 252,412. The upper creasing-roll 0' has two annnlar projections 2 atsuch distances from the ends of the roll as will define the distances which it is desired to make the longitudinal creases from the edges of the bag, the bed-roll m having annular grooves 3, into which the bag is creased longitudinally by the annular projections 2.

The frame-work has been provided with a suitable plate n, upon which near each side of the frame, by screws 15, I have connected a folding guide n, the same consisting, essentially, of a plate of metal having aspiral trend or twist in the direction of its length, the said plate being gradually folded from one toward its other end, so that the bag passed from between the rolls e and in will be gradually folded over as the said bag held between the belts 0 and m is fed through the folders, the bag being delivered from the machine in the condition shown in Figs. 10 and 11, where the flaps or sideedges t ofthe bag are turned over upon the body of the bag.

I do not desire to limit my invention to the precise form of folding-guide shown, as instead I may use any well-known or equivalent shaped guide such as used in sewing-ma chines or in cloth or paper folding machines to turn over or fold cloth or paper longitudinally.

' The machine at a point between the rolls e 6 may be provided with any suitable edge gages, the said gages serving to prevent any lateral movement of the bag away from between the belts.

In practice the feed-rolls e m will be driven at any desired speed, according to the speed desired for the two endless belts which are to feed the bag from the rolls c 0 The tucker-blade f, acting upon the bag having a diamond-folded bottom, forms the second cross-fold and the blind fold, as usual, and passes the said bag through between the said rolls into the space 8, as shown in Fig. 4, the blind fold 4 of the bag coming substantially into-the hooked end of the pocket-plate 0?, that part of the bag between the blind fold and the end of the bottom falling on the belt m and being held thereon by suction.

In Fig. t it will be understood that the belts c and m have carried the bag slightly forward, for in practice the bottom part of the bag to the left of the blind fold 4 is sucked or drawn down closely against the top of the belt m the tendency of the bag to re-open *in the blind fold also aidingthe bag in mainjtaining contact with the belt m*. of the bag being held against the travel- ;ing belt, as described, by suction, the bottom The bottom of the bag is introduced between the two belts c and m underneath the roll 0 and as the bag grasped by the end of the folded bottom 1 is carried to the left in Fig. 4 by the said belt I the blind fold is opened and the bag laid out fiat with its completed satchel-bottom upper- I most.

In the further movement of the bag so opened or unfolded it passes between the I rolls 2' and m and is creased longitudinally,

as at 18, Fig. 9, and is thereafter folded over at its edges in the line of the said creases by the side-folding guides 01/, leaving the bag in the condition, Fig. 10. By making the fol-aminous plate I) of sufficient size to extend'under the roll a the belt is enabled to hold with suitable power against the bag to lead it almost positively into the nip of the belts.

I have shown the rolls 6' and m as made in sections, the outer or end sections of the roll 6 which have the creasing projections}, being adjustable toward and from each other and the central part of the said roll. The end pieces of the roll m having the annular grooves 3, are also adjustable, so that the said rolls e and m may be adapted to bags of different width.

I have shown the projections 2 as on the upper roll and the grooves 3 on the lower roll; but I desire to say that this invention would not be departed from if the projections 52 were on the roll m and the creases 3 in the roll 6'.

IIO

In the latter planthe plates a would be inverted and the flaps t of the bag would be turned over on the opposite side of the bag.

I am aware that en velope-blanks have been creased and the end flaps thereafter acted upon by guides to turn them over on the creased lines.

I claim 1. In a machine for the manufacture of paper bags, the following instrumentalities, in combination, viz: two rolls and a tuckervblade, the latter operating to form the second cross-fold and the blind fold in a paper bag, a pocket to receive the bag having the blind fold, a pair of endless belts, and a suctionboX operating to exhaust the air through one of the said belts, whereby the said belt is made to feed the end of the bag-bottom to the second belt, the said belts in their further movement straightening the bag and taking out the blind fold, substantially as described.

2. A paper-bag machine containing the following instru mentalities, in combination, viz: means to unfold the bag at its blind fold, and rolls to thereafter crease the bag longitudinally across the bottom to the mouth of the bag, and guides to fold the bag longitudinally in the line of the said creases, substantially as described.

3. The belt 0', the rolls 0 e c 6 and the loose ring on the roll 0 combined with the belt m the roll m, and the rolls m m to operate substantially as described.

4. In a machine for the manufacture of paper bags, the belt m its driving rolls, the rolls 0 and 6 the belt 01 extended over them, the roll 0, the folding-blade f, and the creasin g-rolls c m to crease the bag longitudinally parallel to its side edges, combined with the folding guide arranged on each side the said belt to feed the bags between them through the said guides, the latter acting to fold the bag longitudinally from end to end, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK H. KELLIHER.

\V itnesses:

GEO. W. GREGORY, B. DEWAR. 

